Change the platform app manifest structure.

chrome/common/extensions/manifest_tests/extension_manifests_platformapp_unittest.cc

Index: chrome/common/extensions/manifest_tests/extension_manifests_platformapp_unittest.cc
diff --git a/chrome/common/extensions/manifest_tests/extension_manifests_platformapp_unittest.cc b/chrome/common/extensions/manifest_tests/extension_manifests_platformapp_unittest.cc
index ab7a8525804eadc1f05871a09551f7c2d6a31b31..929512da324e7d0d789da0c86c684ae7482f79a6 100644
--- a/chrome/common/extensions/manifest_tests/extension_manifests_platformapp_unittest.cc
+++ b/chrome/common/extensions/manifest_tests/extension_manifests_platformapp_unittest.cc
@@ -31,13 +31,20 @@ TEST_F(ExtensionManifestTest, PlatformApps) {
                 "(theme, app, etc.).",
             extension->install_warnings()[0]);
 
-  LoadAndExpectError(
-      "init_invalid_platform_app_2.json",
-      extension_manifest_errors::kBackgroundRequiredForPlatformApps);
-
-  LoadAndExpectError(
-      "init_invalid_platform_app_3.json",
-      extension_manifest_errors::kPlatformAppNeedsManifestVersion2);
+  Testcase testcases[] = {
+    Testcase("init_invalid_platform_app_2.json",
+        errors::kBackgroundRequiredForPlatformApps),
+    Testcase("init_invalid_platform_app_2.json",
+        errors::kBackgroundRequiredForPlatformApps),
+    Testcase("init_invalid_platform_app_3.json",
+        errors::kPlatformAppNeedsManifestVersion2),
+    Testcase("init_invalid_platform_app_4.json",
+        errors::kPlatformAppInvalidBackgroundScripts),
+    Testcase("init_invalid_platform_app_5.json",
+        errors::kPlatformAppInvalidBackgroundPage)
+  };
+  RunTestcases(testcases, arraysize(testcases),
+               EXPECT_TYPE_ERROR);
 }
 
 TEST_F(ExtensionManifestTest, CertainApisRequirePlatformApps) {